CN1328887A - On-line measurement method of internal temp. of rolled plate and its special-purpose system - Google Patents
On-line measurement method of internal temp. of rolled plate and its special-purpose system Download PDFInfo
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- CN1328887A CN1328887A CN 00110555 CN00110555A CN1328887A CN 1328887 A CN1328887 A CN 1328887A CN 00110555 CN00110555 CN 00110555 CN 00110555 A CN00110555 A CN 00110555A CN 1328887 A CN1328887 A CN 1328887A
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Abstract
The present invention relates to a method for on-line measuring interior temp of rolled plate, and is characterized by that the said method includes collection of temp. signal and data processing, and adopts the following steps: drilling on the side surface of the sample parallel to the rolling direction to the tested point, making thermoelectric couple insert into the above-mentioned hole drilled on the sample, and at the same time of rolling sample, on-line measuring its interior temp. automatically. This invention can implement continuous, real-time and on-line measurement of internal temp. of rolled plate, and can accurately record internal temp. change of rolled plate so as to provide most basic precondition for optimizing and controlling rolling process.
Description
The present invention relates to the measuring method of temperature, a kind of On-line Measuring Method and dedicated system of rolling the intralamellar part temperature is provided especially.
Along with the raising of the extensive use of continuously casting and continuously rolling technology, production automation level and to rolling the raising of plate performance requirement, necessary further excavation process potentiality, significantly improve the intensity of rolling plate, prolong its service life by analog simulation, the approach of optimizing technology, and guarantee good comprehensive performances.The temperature field is to influence one of stable principal element of properties of product in the operation of rolling.This just requires to further investigate hot rolling macroscopic view technological parameter and the quantitative relationship of rolling the plate microstructure, and rolling process temperature field is accurately tested and controlled.Equally, the simulation of Temperature result basis of other all process simulations especially in to the computer simulation of the operation of rolling, simulation of Temperature order of accuarcy as a result will determine the simulation precision of other physical field.For accurate, just must utilize measured result repeatedly the temperature field simulation result to be verified, by relatively improving the precision of temperature field simulation with measured result temperature field simulation.Traditional handicraft is only carried out temperature survey to rolling the plate surface for a long time, and the variation of internal temperature is to be difficult to obtain.Because plastic work done will be converted into heat when the influence of oxide skin and distortion, the slab internal temperature is gone up, surface temperature is not represented the true temperature of rolled piece, and therefore, the reference data of controlling as rolling mill practice with surface temperature is unscientific.And existing temperature measuring equipment is applied to exist in the operation of rolling significantly not enough: measurement category is narrow, reaction speed is slow, sampling period is long, can not real-time recorded data, and be difficult to bear pressure in the operation of rolling, thereby be non-contact temperature measuring to the temperature survey of the operation of rolling mostly, as the optical measurement technology of extensive employing, the degree of accuracy of measurement is subjected to very big influence.
The object of the present invention is to provide a kind of intralamellar part temperature online measuring method and dedicated system of rolling, its can be implemented in the operation of rolling automatically carry out continuously rolling the intralamellar part temperature, in real time, on-line measurement, rolling the intralamellar part variation of temperature in the rolling dynamic process of accurate recording, for the optimization and the control of rolling mill practice provides the most basic precondition.
The invention provides a kind of intralamellar part temperature online measuring method of rolling, system adopts thermocouple contact temperature-measuring method, comprise the processing of selection of temperature signal, data, it is characterized in that: at the sample flank hole parallel with rolling direction until tested point, make the aperture can just insert thermocouple, thermocouple inserts in the hole before sample heats up, and in rolling to sample the sample temperature inside is carried out on-line measurement.
A kind of described measuring system of rolling intralamellar part temperature online measuring method of claim 1 that is exclusively used in, comprise the IPC2003 industrial computer, the PCL-711SA/D card, ADAM-3014 IsolatedDC Input/Output Module, compensating wire, A/D is placed in the ISA slot of industrial computer, the ADAMI/O module links to each other with the A/D card by lead, the other end of ADAMI/O is connected with thermocouple by compensating wire, it is characterized in that: described thermocouple is withstand voltage armoured thermocouple, outer armour (1) prepares fill insulant (3) between outer armour (1) and the thermo wires (2) with stainless steel or high temperature alloy.
For inner thermometric, can only take the method that contacts at present, promptly use thermocouple to finish.Among the present invention, the reliability that how to guarantee point for measuring temperature in the whole operation of rolling is very important, the present invention is by the parallel processing with thermocouple and rolling direction, solve the servo-actuated of point for measuring temperature and sample, before sample heats up, insert the effect of expanding with heat and contract with cold that utilizes metal by thermocouple and make thermocouple closely fixing; Thereby solved the integrity problem of point for measuring temperature well.Simultaneously because the present invention has adopted the method for contact, and this can bear bigger pressure and not short circuit with regard to requiring thermocouple, it is fast that the temp measuring system response speed is wanted, and variation that can real-time response rolled piece internal temperature in addition, also will mask the interference of pulse signal.The present invention has adopted at present very ripe advanced person's computer temperature measuring technique, special thermocouple, developed the temp measuring system of a cover at heat processing techniques such as hot rollings, realized rolling in the rolling dynamic process on-line measurement of intralamellar part temperature, and can measure the temperature of rolling the intralamellar part multiple spot simultaneously, obtain the spatial distribution and the time dependent information of rolling the intralamellar part temperature.Below by embodiment in detail the present invention is described in detail.
Accompanying drawing 1. measurement and control of temperature principle schematic
Accompanying drawing 2. temp measuring systems and sample
Accompanying drawing 3. armoured thermocouple schematic diagrames
Accompanying drawing 4. 3 passage hot rolled plate observed temperatures change the T-t curve
Embodiment
Temp measuring system comprises hardware and software two parts, and its observing and controlling principle is seen Fig. 1.System hardware adopts portable industrial pc, high-precision sensor, high performance analog digital translation card, high-gain, low error to amplify plate, and these hardware modules can be bought on market.When improving the precision of measuring and speed, measurement for the ease of the scene, on the basis of Advantech VisiDAQ3.1 module, use VB to develop the thermometric software and the thermocouple indexing table database of a cover friendly interface, run on the Wimdows platform on the industrial computer.This thermometric software function is powerful, is applicable to the thermocouple temperature measurement of various models, and by the research of aspects such as filtering, shielding interference, compensation hysteresis, sophisticated systems makes system accurate, reliable, efficient.
When actual measurement, need the withstand voltage armoured thermocouple (seeing accompanying drawing 3) of customization, available stainless steel of outer armour (1) or high temperature alloy preparation, fill insulant (3) is to prevent short circuit between outer armour (1) and the thermo wires (2).In the boring of the point for measuring temperature of sample, the aperture need be complementary with thermocouple, just in time can insert and don't loosening, and hole depth is decided according to point for measuring temperature, makes the thermocouple head just in time be positioned at point for measuring temperature.Thermocouple must insert in the hole before sample heats up, and can utilize the effect of expanding with heat and contract with cold of metal to make thermocouple closely fixing like this.The thermocouple afterbody is connected compensating wire, insert data acquisition processing system (seeing accompanying drawing 2) again based on industrial computer.All operations is undertaken by the graphical interfaces of thermometric software, and is very convenient.
This temp measuring system has following characteristics:
1. sampling rate height＞100Hz responds soon reaction speed＜0.01s;
2. precision height is with error＜± 1 of actual temperature ℃;
3. the passage number is 16 and has extendible function, the dynamic mistake of on-line measurement simultaneously
Changing fast continuously of journey multi-point temp.
4. easy to use, realize real time implementation fully, automation.
5. system componentization, retractility is strong, is easy to upgrading and safeguards.
6. powerful, the scope of application is wide, can be used for the thermometric of multiple occasion, is particularly suitable for measuring the variations in temperature under the stressed heating conditions such as plate rolling, bar and wire rod rolling process and forging of straight carbon steel, low-alloy steel.
Utilize above-mentioned independently developed temp measuring system, the Shanghai Baosteel steel research experimental mill on carried out on-the-spot online actual measurement to rolling the intralamellar part temperature, selected experiment parameter is as follows:
1 experimental mill parameter
Maximum rolling force: 2.94 * 10
3KN (common 1.96 * 10
3KN)
The roller footpath: the 375mm roller is wide: 375mm working face: 300mm
Roll material: 9Cr
2Mo (heat treatment state)
Rotating speed: common 500rpm (being 700rpm to the maximum, stepless speed regulation)
Reversible, the band control is cold
2 sample parameters
Size: 45 * 67 * 100mm
3
Material: IF steel
Composition: C＜40ppm, Si＜0.03, Mn=0.1-0.2, Al＜0.03,
S＜6070ppm，P＜100ppm，Ti＝0.06，N＜30ppm
3 experimental programs
Point for measuring temperature: sample center and apart from rolled surface 1/4 center
Rolling temperature: 850,950,1050 ℃
Rolling pass: three passages, relative reduction is followed successively by 50%, 30%, and 20%
4 temp measuring systems
The IPC2003 industrial computer, PCL-711S A/D card, ADAM-3014 IsolatedDC Input/Output Module, (Φ 1.5 * 1000mm) for special 21 armouring NiCr-NiAl thermocouples, compensating wire is based on thermometric software and the thermocouple indexing table database of Advantech VisiDAQ3.1.
A/D is placed in the ISA slot of industrial computer, and the ADAMI/O module links to each other with the A/D card by lead, and the other end of ADAM I/O is connected with thermocouple by compensating wire.
5 experimentations
Bore two holes in the side that each sample is parallel with rolling direction, hole depth is half (33.5mm) of specimen width, and thermocouple just in time can be inserted in the aperture.
In order to make thermocouple can bear bigger pressure when the high temperature, use the outer armour protection of high temperature alloy thermo wires, for preventing short circuit, fill out insulating materials in the outer armour.Thermo wires is φ 0.5mm, and outer armour is φ 1.5mm.Thermocouple is inserted aperture, the part of outside is drawn to paste the sample side for crooked 90 °.Connect thermocouple and industrial computer reception data terminal with sufficiently long compensating wire.The sample that will be inserted with thermocouple is then put into the resistance furnace heating 50 minutes that is warming up to 1050 ℃, guarantees that the sample internal temperature evenly rises to 1050 ℃.Take out sample afterwards, remove oxide skin, rolling in following temperature respectively: 1050 ℃, 950 ℃, 850 ℃, 750 ℃, speed is respectively: 0.2,0.4,0.8, and 1.0m/s.It is round rolling that each sample carries out three passages, and drafts is respectively: 50%, 30%, 20%.The industrial computer temp measuring system is gathered the variations in temperature of the rolling whole process of the automatic record of speed of 25 data with per second.Thermocouple must be cold slotting before the slab heating, and the heat expansion owing to metal will make thermocouple be fastened in the hole in heating process like this, makes it to move with point for measuring temperature when rolling the plate thermal deformation and can not leave point for measuring temperature, and also can not form cold shut influences certainty of measurement.
6. experimental result
As shown in Figure 4, three spikes on every curve are the temperature recovery value in the operation of rolling just, because the generation of distortion heat, temperature rises suddenly, owing to conduct heat to roll and surrounding environment, temperature continues again to descend simultaneously.Between 875-900 ℃, a bit of platform appears in temperature curve, and this is the result of heat of transformation release just, and the phase change zone of IF steel is 870-910 ℃.
No. 1 curve among Fig. 4 and first passage of No. 2 curve, the inlet temperature when rolling the same (1016 ℃), drafts is (50%) too, and the temperature recovery value all be 19 ℃, and waveform can overlap almost too.This explanation measurement result has good repeatability.Rolling deformation heat and latent heat of phase change under other rolling condition, have also been measured well to Temperature Influence.From the result, this temp measuring system can have been measured the variations in temperature of rolling intralamellar part in the operation of rolling well.
Claims (2)
1, a kind of intralamellar part temperature online measuring method of rolling, system adopts thermocouple contact temperature-measuring method, comprise the processing of selection of temperature signal, data, it is characterized in that: at the sample flank hole parallel with rolling direction until tested point, make the aperture can just insert thermocouple, thermocouple inserts in the hole before sample heats up, and in rolling to sample the sample temperature inside is carried out on-line measurement.
2, a kind of described measuring system of rolling intralamellar part temperature online measuring method of claim 1 that is exclusively used in, comprise the IPC2003 industrial computer, the PCL-711SA/D card, ADAM-3014IsolatedDC Input/Output Module, compensating wire, A/D is placed in the ISA slot of industrial computer, ADAM I/O module links to each other with the A/D card by lead, the other end of ADAM I/O is connected with thermocouple by compensating wire, it is characterized in that: described thermocouple is withstand voltage armoured thermocouple, outer armour (1) prepares fill insulant (3) between outer armour (1) and the thermo wires (2) with stainless steel or high temperature alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001105558A CN1156347C (en) | 2000-06-21 | 2000-06-21 | On-line measurement method of internal temp. of rolled plate and its special-purpose system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001105558A CN1156347C (en) | 2000-06-21 | 2000-06-21 | On-line measurement method of internal temp. of rolled plate and its special-purpose system |
Publications (2)
| Publication Number | Publication Date |
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| CN1328887A true CN1328887A (en) | 2002-01-02 |
| CN1156347C CN1156347C (en) | 2004-07-07 |
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| CNB001105558A Expired - Lifetime CN1156347C (en) | 2000-06-21 | 2000-06-21 | On-line measurement method of internal temp. of rolled plate and its special-purpose system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329133C (en) * | 2003-02-25 | 2007-08-01 | 西门子公司 | Method for regulating the temperature of a metal strip, especially for rolling a metal hot strip in a finishing train |
| CN102102145A (en) * | 2009-12-22 | 2011-06-22 | 鞍钢股份有限公司 | Method for measuring heating temperature of hot charging blank |
| CN102179413A (en) * | 2009-12-18 | 2011-09-14 | Posco公司 | Method and system to control quality in cold rolling system |
| CN102399972A (en) * | 2011-11-30 | 2012-04-04 | 东北大学 | Temperature on-line measuring device for roller type quenching process of medium and heavy plate |
| CN104551528A (en) * | 2013-10-21 | 2015-04-29 | 哈尔滨飞机工业集团有限责任公司 | Thermoelectric assembly method of composite blade embedded bushing |
| CN105973493A (en) * | 2015-03-10 | 2016-09-28 | 福特全球技术公司 | Temperature measurement device for metal sheet |
| CN106269919A (en) * | 2016-08-30 | 2017-01-04 | 东北大学 | A kind of method for detecting metal sheet band operation of rolling deformed area temperature |
| CN109092923A (en) * | 2018-07-19 | 2018-12-28 | 天津市天锻压力机有限公司 | A kind of multi partition heating system and control method |
| CN110462249A (en) * | 2017-03-27 | 2019-11-15 | 克诺尔轨道车辆系统有限公司 | The disc brake apparatus of the vehicle of temperature detection with brake disc |
| CN111060212A (en) * | 2019-12-02 | 2020-04-24 | 包头钢铁（集团）有限责任公司 | Steel rail core temperature measuring method |
| CN112781790A (en) * | 2020-12-23 | 2021-05-11 | 西京学院 | Furnace leakage detection system and method for medium-frequency induction smelting furnace |
-
2000
- 2000-06-21 CN CNB001105558A patent/CN1156347C/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329133C (en) * | 2003-02-25 | 2007-08-01 | 西门子公司 | Method for regulating the temperature of a metal strip, especially for rolling a metal hot strip in a finishing train |
| CN102179413A (en) * | 2009-12-18 | 2011-09-14 | Posco公司 | Method and system to control quality in cold rolling system |
| CN102179413B (en) * | 2009-12-18 | 2014-04-02 | Posco公司 | Method and system to control quality in cold rolling system |
| CN102102145A (en) * | 2009-12-22 | 2011-06-22 | 鞍钢股份有限公司 | Method for measuring heating temperature of hot charging blank |
| CN102102145B (en) * | 2009-12-22 | 2014-03-12 | 鞍钢股份有限公司 | Method for measuring heating temperature of hot charging blank |
| CN102399972A (en) * | 2011-11-30 | 2012-04-04 | 东北大学 | Temperature on-line measuring device for roller type quenching process of medium and heavy plate |
| CN104551528A (en) * | 2013-10-21 | 2015-04-29 | 哈尔滨飞机工业集团有限责任公司 | Thermoelectric assembly method of composite blade embedded bushing |
| CN105973493B (en) * | 2015-03-10 | 2020-07-03 | 福特全球技术公司 | Temperature measuring device for metal plate |
| CN105973493A (en) * | 2015-03-10 | 2016-09-28 | 福特全球技术公司 | Temperature measurement device for metal sheet |
| CN106269919A (en) * | 2016-08-30 | 2017-01-04 | 东北大学 | A kind of method for detecting metal sheet band operation of rolling deformed area temperature |
| CN106269919B (en) * | 2016-08-30 | 2018-05-04 | 东北大学 | A kind of method for detecting metal sheet band operation of rolling deformed area temperature |
| CN110462249A (en) * | 2017-03-27 | 2019-11-15 | 克诺尔轨道车辆系统有限公司 | The disc brake apparatus of the vehicle of temperature detection with brake disc |
| CN110462249B (en) * | 2017-03-27 | 2021-02-02 | 克诺尔轨道车辆系统有限公司 | Disc brake device for a vehicle with temperature detection of the brake disc and vehicle |
| CN109092923A (en) * | 2018-07-19 | 2018-12-28 | 天津市天锻压力机有限公司 | A kind of multi partition heating system and control method |
| CN111060212A (en) * | 2019-12-02 | 2020-04-24 | 包头钢铁（集团）有限责任公司 | Steel rail core temperature measuring method |
| CN112781790A (en) * | 2020-12-23 | 2021-05-11 | 西京学院 | Furnace leakage detection system and method for medium-frequency induction smelting furnace |
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| Publication number | Publication date |
|---|---|
| CN1156347C (en) | 2004-07-07 |
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Granted publication date: 20040707 |